Job in accounting (Munich)

I am planning to move to Munich in a couple of months, and would like to start working there as an accountant either in part time or full time - I work now as a general ledger accountant at an international company using NL GAAP and soon US GAAP (besides the Hungarian rules, as I report also to the Hungarian state), but I'd work firstly on accounts payable or receivable, preferably using my German and English.

Can you advise me where can I start the preparation? Do I need to know HGB or any other system? Do I find job with only speaking English or the high-level German is necessary? My German currently around B2 level.

Thank you for the advices in advance - feel free to PM me also in case of any comments.